Mining machine



Aug. 29, 1933. F. A. LINDGREN MINING MACHINE Filed-March 27, 1930 2Sheets-Sheet l Aug. 29, 1933- F. A. LINDGREN MINING MACHINE Filed March27 1930 2 Sheets-Sheet 2 Patented Aug. 29, 1933 U NITED STATES PATENTOFFICE MINING MACHINE Frank A.'Lindgren, Western Springs, 111., its--signor to :Goodman Manufacturing Company, Chicagm 111., a Corporation ofIllinois Application Marchl'l, 1930. "Serial No. 439,365

4 Claims. (01.2(52-28 This invention relates to improvements in miningmachines and has for its principal object to provide an improved miningmachine :of the shearing type adapted to make a vertical or-shearing cutin :a mine wall extending from the mine bottom to the mine roofperpendicular to the mine wall or at various angles with respectthereto. Y

A priorapplication'Serial Number 344,677, filed March 6, 1929, showsashearing machine-adapted to make avertical cut in aminewall at variousangles with respect thereto. While the machine of my present inventionis somewhat similar to that shown in my vprior invention, the :machineof 'my present invention discloses a new and. improved means for raisingthe entire machine above the mine rails so the machine may be turned-atvarious angles with respect to the mine face for cutting a vertical:kerf therein.

My invention may be more clearly understood with reference to theaccompanying drawings wherein: i y

Figure 1 is a top plan view of the device em"- bodying my invention with:parts broken away and in section; r

Figure 2 s aside elevation of the device shown in Figure l with partsbroken away and in section;

Figure 3 isa side elevation'of the device-shown in Figure 2 with -thedevice embodying my invention-positioned in 'a different position thanis shown in Figure 2; l

:Figure 4 is an enlargedipartialfragmentary side elevation of themachine with parts broken away and in section; and e Figure 5'is anenlarged sectional view taken 2011 1ine '55 of Figure 4. a

Like numerals refer to like parts throughout the several-figures. 7

Referring now in particular to the drawings, I have provided acuttingelement generallylindicated at l0 reciprocably movable :in aguide frame 1-1'pivoted'at its rearward end to abase frame 12 on -'atransverse shaft 13, which base frame is supported on axles 15, 15 andwheels 16, '16.

The cutting element 10 is similar to :that of the ordinary breastmachine but is "turned on :its side to make a vertical instead of a:horizontal cut and is fully disclosed in a prior application SerialNumber 158290, filed'December 3'1, 19-26, so will only bydescribed in sofar as is necessary to fullydisclose my present invention. The cutting-element 10 comprises a cutter bar 17 reciprocably movable in the guide'frame .11 and havinganendless 'cu'tter chain 18 movable therewhicheffects vertical movement of the cutter closed in a housing 35, whichgear train is of about. The cutter chain 18 :is driven -from a motor 19herein preferably :shown as an electric motor, through *a suitable :gear:train of an ordi: nary type which includes :a motor pinion 21 externalgear 22,-zbevel pinion 23, bevel gear 24, andsprocket 26. a 7 nReciprocable movement of the cutting elemen't 'iOis obtained bysprockets 27 which mesh with racks 28 on the top and bottom sides of:stationary guide frame =1'1. Said sprockets are driven bye-the motor -19atone speed in one direction and at a different speed. in the oppositedirection by a suitable gear train in a usual manner which is fullydescribed in any prior application, Serial Number 158,290, hereinbeforementioned but is :not herein described in detail since it :is i110 :partof my invention. I v Pivotal :movement of the'cutting :element 10 aboutthe axis of the shaft 13 is effected by a vertically adjustable supportindicated at 2 9 on-the forward portion of .the base frame 12. Said:v'ertically adjustable support includes a pair of;parallel:spacedracks30, one of said racks be: ing on each side of the cutter bar 17 and eachof said "racks being pivotally --mounted .on the base frame 12. '-I hetracks 30 are guided in a frame member ,31 extending outwardly from theguide ,trame 11 and fixed thereto. Pinions p32, 32 are flxedron atransverse shaft 33 journaled in' the frame member 31 'on each side ofthe cutter bar 17 and mesh :with the racks 30 so rotation *of saidpinions will move the frame I member '31 along the racks 30 to move the-cutting element. 10 about the axis of the shaft 13 bar 1 7 to -make :avertical out in a mine :wall. The transverse shaft 33 ;is driven fromthe motor :19 :by means of atelesccping drive shaft 34' and 2a:s'uitable system of reduction gears en an ordinary construction well:known to the art and is generally indicated by dotted lines at 36 inFigures 2 and 3.

Referring now detail toseveral of the novel features of my inventionwhich include a novel means for raising the'mining machine above the:mine rails so said mining machine may vbe turned at various angles withrespect to the rails, a raising'means which herein comprises a jack '3?is provided on therlongitudinal center line of the machine :andspacedmidway between theiax1es ,1515. I Thejack 37 includes-a housing -38having ear '39, 39 projecting outwardly therefrom, which d ears areattached ,to the underside of parallel spaced angles 40, 40 extendingtransversely of the base frame 12. The housing 38 has a cover 41detachably mounted thereon. A cylindrical wall 42 is formed within thehousing 38 and affords a vertical sliding support for a cylindricalportion 43 of a jack foot 44. The cylindrical portion 43 of the jackfoot 44 isfeathered within the cylindrical wall "42 by means of afeather key 45 and has a threaded sleeve 46 therein. The threaded sleeve46 is fixed to the cylindrical portion 43 of the jack foot 44 bya setscrew 4'7. A shaft 48 is threaded within the housing 38 and extendingoutwardly therefrom.

This housing also encloses a worm gear 55 keyed on the outer end of theshaft 53 and a worm 56 cut integral with a shaft 57, which shaft isjournaled within said housing. The rearward end of the shaft 57 issquared and fits in a connecting link 59. A squared end of a shaft 60fits in the opposite end of said connecting link and extendsrearwardlytherefrom. The shaft 60 is supported in a bearing member 61near its rearward end and has a squared socket 62 at its rearward end.Suitable friction drive means herein comprising a disk type of frictionclutch 63 of a usual construction are interposedbetween the socket 62 ofthe shaft 66 and a drive shaft 65. The drive shaft 65 is journaled ina'bearing' 64 integral with a motor support'bracket 66. The shaft 65 hasa head 67 thereon abutting the rearward end of the bearing 64. A spurgear 68 is keyed to the forward portion of the shaft 65 and abuts therearward portion of the friction clutch 63. A motor 691s supportedon'the motor support bracket 66 for driving the spur gear 68 by means ofa spur pinion 70. Thus the motor 69 drives the bevel gear 49 andthreaded shaft 48 through the spur gear 68. friction clutch 63, worm 56,worm gear 55 and bevel pinion '52 which drives the threaded shaft 48'and causes vertical movement of the threaded sleeve 46 and jack foot 44.

The jack foot 44 comprises a circular base member '73supported onaplate74l Balls 75 are interposed between the under portion of the basemember 73 and'top portion of the plate 74and ride in races 76 onthe-under portionof the base member 73 so thebase member '73 and theentire mining machine may be rotatably moved with respect to the plate74 when said plate is engaged with the mine bottom and the miningmachine is supported on said plate. Means are'provided to guide the basemember 73 of the jack foot 44' on the plate 74 which comprises a ring 77fixed to the top portion of the plate '74 by a suitable means, whichmeans is herein shown as machine screws 78. The ring '77 has a flange 79extending inwardly therefrom, which flange abuts a shoulder 80 on theouter periphery of the base member 73.

' Figure 2 shows the mining machine on the mine rails and Figure 3 showsthe jack foot 44 engaging the mine'bottorn and shows the mining machinepositioned at right angles to the mine rails. When the mining machine ispositioned at right angles with respect to the mine rails, angles 81,

. with respect thereto.

81 are laid crossways of the track and are adapted to be engaged by thetrack wheels 16 to support the mining machine when the plate 74 of thejack foot 44 is disengaged from the mine bottom. This forms a supportfor the mining machine when it is desired to cut a vertical kerf atright angles to the mine track proper orv at various angles When desiredthe jack 3 may be used toposition the'mining machine so it may be'movedfrom one track to another without the use of switches; as, for instance,when the mining machine is supported on the angles 81, 81 crossways ofthe main track said mining machine may be moved from saidangles ontorails in alinement with said angles. It may-be noted that the angles 81may be placed in various-positions on the rails so the mining machinemay be moved onto tracks at various angular positions with respect tothe main track. This is especially advantageous when it is desiredto cutin remote parts of the mine not fully developed where it is uneconomicalto provide switches intoeach cutting place and where conveyors orloading machinery of various types are in useand it is not desired togoto the expense of providing switches into the .mine rooms.v I

It may thus be seen that I have provided a mining machine adapted tomake 'shearingcuts in a mine wall, which mining machine is-pro-j videdwith a raising and turning means for raising the mining machine abovethe mine rails and allowing said-mining machine to be turned at variousangles with respect to the rails to out in various positions withrespectto the mine rails. It may also be seen that the raising and turn:ing device may also serve to eliminate switches whenused'in conjunctionwith the angles 81 as has'been fully described. a While I have hereinshown and described one form of my invention, it will be understood thatthe construction and arrangement of thevarious parts maybealtered'without departing from the spirit and scope thereof.Furthermore, I do not wish to be construed as limiting myself to thespecific'form illustrated, exceptingas it. may be specifically limitedin the appended claims;

I claim as my invention:

1; In a mining machine, a track-mounted base frame, a-cutting elementthereon including areciprocably -movable vertically disposedchaincarrying cutter bar, a motor on sai-dbase frame on one side of saidcutter bar for driving the cutter chain, for reciprocating the cutterbar, and for driving the truck wheels to propel the apparatus, a jacksupported on the base frameincluding a jack foot engageable with themine bottom, and a separate motor mounted'on the base frame on theopposite side of said cutter bar from-said first-mentioned motor andhaving driving engagement with said jack.

2. In a. mining machine, a track-mounted base frame, a cutting elementthereon including a reframe, a cutting element thereon including areciprocably movable vertically disposed chaincarrying cutter bar, amotor on said base frame for driving the cutter chain, for reciprocatingthe cutter bar, and for driving the truck wheels for propelling theapparatus, and means for positioning said cutter bar for cutting avertical kerf at various angles with respect to the mine wall com-.prising means for raising said base frame and cutting element above thetrack and supporting said base frame for rotation about a vertical axis,said means comprising a jack carried by said base frame intermediatesaid track wheels including a jack foot engageable with the mine bottom,and a separate motor on said base frame having driving engagement withsaid jack. i

4. In a track-mounted mining machine, a base frame, a cutting elementthereon including a reciprocably movable verticallydisposedchain-carrying cutter bar, a motor on said base frame for driving 'thecutter chain, for reciprocating the cutter bar, and for driving thetruck wheels for propelling the apparatus, and means for positioningsaid cutter bar for cutting a plurality of vertical kerfs at variousanglesrwith respect to-the mine wall comprising means for raising saidbase frame and cutting element above the track and supporting said baseframe for rotation about a vertical axis, said means comprising a screwjack supported by said base frame including ajack foot engageable withthe mine bottom, and a separate motor mounted on said base frame havingdriving engagement with said jack. 7

FRANK A. LINDGREN.

